CN207526788U - A kind of hydraulic system of combined tractor - Google Patents
A kind of hydraulic system of combined tractor Download PDFInfo
- Publication number
- CN207526788U CN207526788U CN201721673527.6U CN201721673527U CN207526788U CN 207526788 U CN207526788 U CN 207526788U CN 201721673527 U CN201721673527 U CN 201721673527U CN 207526788 U CN207526788 U CN 207526788U
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- China
- Prior art keywords
- directive wheel
- oil
- oil cylinder
- wheel
- valve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of hydraulic systems of combined tractor, including oil supply system, traveling wheel jacking system, left directive wheel jacking system, right directive wheel jacking system and traveling wheel steering, the inlet and outlet of fuel channel of the traveling wheel oil cylinder of traveling wheel jacking system is connected by traveling wheel solenoid directional control valve with oil supply system, left directive wheel jacking system includes left directive wheel oil cylinder and left directive wheel solenoid directional control valve, and the inlet and outlet of fuel channel of left directive wheel oil cylinder is connected by left directive wheel solenoid directional control valve with oil supply system；Right directive wheel jacking system includes right directive wheel oil cylinder and right directive wheel solenoid directional control valve, and the inlet and outlet of fuel channel of right directive wheel oil cylinder is connected by right directive wheel solenoid directional control valve with oil supply system；Traveling wheel steering includes overturning oil cylinder and overturning oil cylinder solenoid directional control valve, and the inlet and outlet of fuel channel of overturning oil cylinder is connected by overturning oil cylinder solenoid directional control valve with oil supply system.The utility model stability is good, and the equipment use scope applied is wide, highly practical.
Description
Technical field
The utility model belongs to mechanical-hydraulic field, is related to a kind of hydraulic system, and in particular to a kind of combined traction
The hydraulic system of vehicle.
Background technology
Combined tractor, because of its distinctive structure and occupation mode, can be promoted as a kind of novel pulling equipment
The efficiency of the work such as the operation traction of shunting service or vehicle on rail can slow down the pressure of China railways systems face
Power has higher application value.
The combined tractor overwhelming majority developed at present uses the power that hydraulic system is lifted as directive wheel,
Enter railroad-driving mode when directive wheel is dropped on rail, when directive wheel rise to initial position it is hanging when switch to highway
Driving mode, and travelled on highway by traveling wheel.But existing research does not consider the needs of traveling wheel lifting, equipment chassis
It is highly fixed, it is impossible to adapt to all road surfaces, cause the limitation used.
Utility model content
The purpose of this utility model is to provide a kind of hydraulic system suitable for combined tractor, it is abundant the considerations of
Tractor various functions demand.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of hydraulic system of combined tractor, it is characterised in that：It is supplied including oil supply system and by oil supply system
Traveling wheel jacking system, left directive wheel jacking system, right directive wheel jacking system and the traveling wheel steering of oil, the row
Traveling wheel jacking system includes traveling wheel oil cylinder and traveling wheel solenoid directional control valve, and the inlet and outlet of fuel channel of the traveling wheel oil cylinder passes through walking
Wheel solenoid directional control valve is connected with oil supply system；The left directive wheel jacking system includes left directive wheel oil cylinder and left directive wheel electromagnetism
Reversal valve, the inlet and outlet of fuel channel of the left directive wheel oil cylinder are connected by left directive wheel solenoid directional control valve with oil supply system；The right side
Directive wheel jacking system includes right directive wheel oil cylinder and right directive wheel solenoid directional control valve, the inlet and outlet of fuel channel of the right directive wheel oil cylinder
It is connected by right directive wheel solenoid directional control valve with oil supply system；The traveling wheel steering includes overturning oil cylinder and overturning oil cylinder
Solenoid directional control valve, the inlet and outlet of fuel channel of the overturning oil cylinder are connected by overturning oil cylinder solenoid directional control valve with oil supply system.
As an improvement, the oil supply system includes oil storage cylinder and oil pump, oil pump passes through outlet conduit and four electromagnetic switch
Valve is connected.
As an improvement, the oil circuit between the traveling wheel solenoid directional control valve and traveling wheel oil cylinder is equipped with the first hydraulic lock,
Traveling wheel lifting superposing type throttling there are one being all provided on each oil circuit between first hydraulic lock and traveling wheel solenoid directional control valve row
Valve, the traveling wheel lifting superposing type throttle valve are composed in parallel by throttle valve and throttle system check valve, the oil of traveling wheel oil cylinder
Road is equipped with the traveling wheel accumulator being attached thereto, and there are two the traveling wheel oil cylinders, and one is equipped on each traveling wheel oil cylinder
A traveling wheel overflow valve.
As an improvement, the oil circuit between the left directive wheel solenoid directional control valve and left directive wheel oil cylinder is equipped with the second hydraulic pressure
It locks, is all provided with lifting to be superimposed there are one left directive wheel on each oil circuit between the second hydraulic lock and left directive wheel solenoid directional control valve row
Formula throttle valve, the left directive wheel lifting superposing type throttle valve are composed in parallel by throttle valve and throttle system check valve, left guiding
The oil circuit of wheel oil cylinder is equipped with the left directive wheel accumulator being attached thereto, and there are two the left directive wheel oil cylinders, each left guiding
Left directive wheel overflow valve there are one being all provided on wheel oil cylinder.
As an improvement, the oil circuit between the right directive wheel solenoid directional control valve and right directive wheel oil cylinder is equipped with third hydraulic pressure
It locks, is all provided with lifting to be superimposed there are one right directive wheel on each oil circuit between third hydraulic lock and right directive wheel solenoid directional control valve row
Formula throttle valve, the right directive wheel lifting superposing type throttle valve are composed in parallel by throttle valve and throttle system check valve, right guiding
The oil circuit of wheel oil cylinder is equipped with the right directive wheel accumulator being attached thereto, and there are two the right directive wheel oil cylinders, each right guiding
Right directive wheel overflow valve there are one being all provided on wheel oil cylinder.
As an improvement, the oil circuit between the overturning oil cylinder solenoid directional control valve and overturning oil cylinder is equipped with overturning throttle valve.
As an improvement, the oil pump inlet pipeline is equipped with oil filter, outlet conduit is equipped with supply relief valve and fuel feeding
Check valve, the oil pump are gear oil pump.
The beneficial effects of the utility model are：
In the hydraulic system of the combined tractor of the utility model, changed by changing solenoid directional control valve oil inlet
The stroke directions of directive wheel oil cylinder and traveling wheel oil cylinder, the lifting of directive wheel and traveling wheel is controlled with this, and the lifting of directive wheel is used
In the switching of two kinds of operating modes of tractor, the lifting of traveling wheel draws height for being promoted in ground run.Traveling wheel
Steering is used to lower the direction of whole traveling wheel in highway work pattern.The utility model stability is good, the equipment applied
Use scope is wide, highly practical.
Description of the drawings
Fig. 1 is the hydraulic system structure schematic diagram of the combined tractor of the utility model；
Fig. 2 is the schematic diagram of superposing type throttle valve in hydraulic system；
Fig. 3 is hydraulic lock schematic diagram in hydraulic system；
Fig. 4 is the hydraulic fluid port schematic diagram of traveling wheel solenoid directional control valve；
Fig. 5 is the hydraulic fluid port schematic diagram of left directive wheel solenoid directional control valve；
Fig. 6 is the hydraulic fluid port schematic diagram of right directive wheel solenoid directional control valve；
Fig. 7 is the hydraulic fluid port schematic diagram of overturning oil cylinder solenoid directional control valve.
1- oil storage cylinders, 2- oil filters, 3- motors, 4- gear oil pumps, 5- supply relief valves, 6- oil feed non-return valves, 7- walkings
Wheel solenoid directional control valve, 8- overturning oil cylinder solenoid directional control valves, the left directive wheel solenoid directional control valves of 9-, the right directive wheel solenoid directional control valves of 10-,
11- traveling wheels lift superposing type throttle valve, the left directive wheel lifting superposing type throttle valves of 12-, the right directive wheel lifting superposing type sections of 13-
Stream valve, the first hydraulic locks of 14-, the second hydraulic locks of 15-, 16- third hydraulic locks, 17- traveling wheel oil cylinders, 18- traveling wheel accumulators,
19- the first traveling wheel overflow valves, 20- the second traveling wheel overflow valves, the left directive wheel oil cylinders of 21-, the left directive wheel accumulators of 22-, 23-
First left directive wheel overflow valve, the second left directive wheel overflow valves of 24-, the right directive wheel oil cylinders of 25-, the right directive wheel accumulators of 26-,
The first right directive wheel overflow valves of 27-, the second right directive wheel overflow valves of 28-, 29- overturning oil cylinders, 30- overturning throttle valves, 31- throttlings
Valve, 32- throttle system check valves.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
As shown in Figure 1, a kind of hydraulic system of combined tractor, including oil supply system and pass through oil supply system fuel feeding
Traveling wheel jacking system, left directive wheel jacking system, right directive wheel jacking system and traveling wheel steering, the walking
It takes turns jacking system and includes traveling wheel oil cylinder 17 and traveling wheel solenoid directional control valve 7, the inlet and outlet of fuel channel of the traveling wheel oil cylinder 17 passes through
Traveling wheel solenoid directional control valve 7 is connected with oil supply system；The left directive wheel jacking system includes left directive wheel oil cylinder 21 and a left side is led
To wheel solenoid directional control valve 9, the inlet and outlet of fuel channel of the left directive wheel oil cylinder 21 passes through left directive wheel solenoid directional control valve 9 and oil supply system
It is connected；The right directive wheel jacking system includes right directive wheel oil cylinder 25 and right directive wheel solenoid directional control valve 10, the right guiding
The inlet and outlet of fuel channel of wheel oil cylinder 25 is connected by right directive wheel solenoid directional control valve 10 with oil supply system；The traveling wheel steering packet
Overturning oil cylinder 29 and overturning oil cylinder solenoid directional control valve 8 are included, the inlet and outlet of fuel channel of the overturning oil cylinder 29 is changed by overturning oil cylinder electromagnetism
It is connected to valve 8 with oil supply system, the oil circuit between the overturning oil cylinder solenoid directional control valve 8 and overturning oil cylinder 29 is equipped with overturning and saves
Flow valve 30.
The oil supply system includes oil storage cylinder 1 and oil pump, and the oil pump inlet pipeline is equipped with oil filter 2, outlet conduit
Supply relief valve 5 and oil feed non-return valve 6 are equipped with, the oil pump is gear oil pump 4, and oil pump passes through outlet conduit and four electromagnetism
Reversal valve is connected, and oil pump is driven by motor 3, and the oil in oil storage cylinder 1 is sent to a oily by each solenoid valve after being pressurized by oil pump
Cylinder.
Oil circuit between the traveling wheel solenoid directional control valve 7 and traveling wheel oil cylinder 17 is equipped with the first hydraulic lock 14, and first
Traveling wheel lifts superposing type throttle valve there are one being all provided on each oil circuit between 7 row of hydraulic lock 14 and traveling wheel solenoid directional control valve
11, the traveling wheel lifting superposing type throttle valve 11 is composed in parallel by throttle valve 31 and throttle system check valve 32, traveling wheel oil
17 oil circuit of cylinder is equipped with the traveling wheel accumulator 18 being attached thereto, and there are two the traveling wheel oil cylinders 17, each traveling wheel oil cylinder
Traveling wheel overflow valve there are one being all provided on 17.
Oil circuit between the left directive wheel solenoid directional control valve 9 and left directive wheel oil cylinder 21 is equipped with the second hydraulic lock 15,
It is all provided with lifting to be superimposed there are one left directive wheel on each oil circuit between second hydraulic lock 15 and left 9 row of directive wheel solenoid directional control valve
Formula throttle valve 12, the left directive wheel lifting superposing type throttle valve 12 is by throttle valve 31 and the group in parallel of throttle system check valve 32
Into left 21 oil circuit of directive wheel oil cylinder is equipped with the left directive wheel accumulator 22 being attached thereto, and the left directive wheel oil cylinder 21 has two
It is a, it is all provided with that there are one left directive wheel overflow valves on each left directive wheel oil cylinder 21.
Oil circuit between the right directive wheel solenoid directional control valve 10 and right directive wheel oil cylinder 25 is equipped with third hydraulic lock 16,
Right directive wheel lifting laminated there are one being all provided on each oil circuit between third hydraulic lock 16 and right 10 row of directive wheel solenoid directional control valve
Add formula throttle valve 13, the right directive wheel lifting superposing type throttle valve 13 is by throttle valve 31 and the group in parallel of throttle system check valve 32
Into right 25 oil circuit of directive wheel oil cylinder is equipped with the right directive wheel accumulator 26 being attached thereto, and the right directive wheel oil cylinder 25 has two
It is a, it is all provided with that there are one right directive wheel overflow valves on each right directive wheel oil cylinder 25.
First hydraulic lock 14, the second hydraulic lock 15 as the structure of third hydraulic lock 16, as shown in figure 3, using
Hydraulic lock of the prior art, it is therefore an objective to keep traveling wheel oil cylinder 17, left directive wheel oil cylinder 21, right directive wheel oil cylinder 25 and overturning
Oil cylinder 29 can stop at an arbitrary position.
Traveling wheel lifting superposing type throttle valve 11, left directive wheel lifting superposing type throttle valve 12 and the lifting superposition of right directive wheel
13 structure of formula throttle valve is the same as shown in Fig. 2, composed in parallel by a throttle valve 31 and a throttle system check valve 32, and
F.F. when throttle system check valve 32 is with respect to for oil cylinder for oil inlet, i.e. oil cylinder oil inlet, throttle system check valve when moving back oil
32 is obstructed, is moved back slowly by throttle valve 31.
It should be noted that：The application meaning oil cylinder is the hydraulic cylinder with piston, four solenoid directional control valves, i.e. traveling wheel
Solenoid directional control valve 7, overturning oil cylinder solenoid directional control valve 8, left directive wheel solenoid directional control valve 9 and right directive wheel solenoid directional control valve 10 move back
Oil circuit, which accesses, to move back in the oil storage cylinder of oil or oil storage cylinder 1.
When traveling wheel works：
By the oil of oil supply system supply by traveling wheel solenoid directional control valve 7, when traveling wheel solenoid directional control valve 7 is entered positive letter
Number when, with reference to Fig. 4, P1 mouthfuls to B1 of oil inlet passage is opened, and oil is gone successively to by two groups of throttle valves 31 and throttle system check valve
A branch in a branch and the first hydraulic lock 14 in the 32 traveling wheel lifting superposing type throttle valves 11 formed, finally
Push traveling wheel oil cylinder 17.When traveling wheel solenoid directional control valve 7 is entered negative signal, P1 mouthfuls to A1 mouthfuls oil inlet passages are opened, oil
Pass through another branch that traveling wheel lifts superposing type throttle valve 11 and the first hydraulic lock 14 respectively so that traveling wheel oil cylinder 17 to
Another direction pushes, and reaches the function that traveling wheel lifts in the vertical direction with this.
During left directive wheel work：
By the oil of oil supply system supply by left directive wheel solenoid directional control valve 9, when left directive wheel solenoid directional control valve 9 is entered
During positive signal, with reference to Fig. 5, P2 mouthfuls to B2 mouthfuls of oil inlet passage is opened, and oil is gone successively to by two groups of throttle valves 31 and throttle system
A branch in a branch and the second hydraulic lock 15 in the left directive wheel lifting superposing type throttle valve 12 that check valve 32 is formed
Road finally pushes left directive wheel oil cylinder 21 to move.When left directive wheel solenoid directional control valve 9 is entered negative signal, P2 mouthfuls to A2 mouthfuls
Oil inlet passage is opened, and oil does not lift superposing type throttle valve 12 and another branch of the second hydraulic lock 15 by left directive wheel,
So that left directive wheel oil cylinder 21 is pushed to another direction, the function that left directive wheel lifts in the vertical direction is reached with this.
During right directive wheel work：
By the oil of oil supply system supply by right directive wheel solenoid directional control valve 10, when right directive wheel solenoid directional control valve 10 is defeated
When entering positive signal, with reference to Fig. 6, P3 mouthfuls to B3 mouthfuls of oil inlet passage is opened, and oil is gone successively to by two groups of throttle valves 31 and throttling system
The right directive wheel that check valve 32 of uniting is formed lifts one of the branch and third hydraulic lock 16 in superposing type throttle valve 13
Branch finally pushes right directive wheel oil cylinder 25 to move.When right directive wheel solenoid directional control valve 10 is entered negative signal, P3 mouthfuls to A3
Mouth oil inlet passage is opened, and oil passes through another branch that right directive wheel lifts superposing type throttle valve 13 and third hydraulic lock 16
Road so that right directive wheel oil cylinder 25 is pushed to another direction, reaches the function that right directive wheel lifts in the vertical direction with this.
When turn over function starts：
By the oil of oil supply system supply by overturning oil cylinder solenoid directional control valve 8, when overturning oil cylinder solenoid directional control valve 8 is entered
During positive signal, with reference to Fig. 7, P4 mouthfuls to B4 mouthfuls of oil inlet passage is opened, final to push overturning oil cylinder 29, when overturning oil cylinder electromagnetism changes
When being entered negative signal to valve 8, P4 mouthfuls to A4 mouthfuls of oil inlet passage is opened, final that overturning oil cylinder 29 is pushed to be moved to another direction
It is dynamic, traveling wheel is enabled to complete to turn in road running with this, moved towards different directions.
Claims (7)
1. a kind of hydraulic system of combined tractor, it is characterised in that：Including oil supply system and pass through oil supply system fuel feeding
Traveling wheel jacking system, left directive wheel jacking system, right directive wheel jacking system and traveling wheel steering, the walking
It takes turns jacking system and includes traveling wheel oil cylinder and traveling wheel solenoid directional control valve, the inlet and outlet of fuel channel of the traveling wheel oil cylinder passes through traveling wheel
Solenoid directional control valve is connected with oil supply system；The left directive wheel jacking system includes left directive wheel oil cylinder and left directive wheel electromagnetism changes
To valve, the inlet and outlet of fuel channel of the left directive wheel oil cylinder is connected by left directive wheel solenoid directional control valve with oil supply system；It leads on the right side
Include right directive wheel oil cylinder and right directive wheel solenoid directional control valve to wheel jacking system, the inlet and outlet of fuel channel of the right directive wheel oil cylinder leads to
Right directive wheel solenoid directional control valve is crossed with oil supply system to be connected；The traveling wheel steering includes overturning oil cylinder and overturning oil cylinder electricity
Magnetic reversal valve, the inlet and outlet of fuel channel of the overturning oil cylinder are connected by overturning oil cylinder solenoid directional control valve with oil supply system.
2. a kind of hydraulic system of combined tractor as described in claim 1, it is characterised in that：The oil supply system packet
Oil storage cylinder and oil pump are included, oil pump is connected by outlet conduit with four solenoid directional control valves.
3. a kind of hydraulic system of combined tractor as claimed in claim 2, it is characterised in that：The traveling wheel electromagnetism
Oil circuit between reversal valve and traveling wheel oil cylinder is equipped with the first hydraulic lock, the first hydraulic lock and traveling wheel solenoid directional control valve row it
Between each oil circuit on be all provided with that there are one traveling wheels to lift superposing type throttle valve, the traveling wheel lifts superposing type throttle valve by saving
Stream valve and throttle system check valve compose in parallel, and the oil circuit of traveling wheel oil cylinder is equipped with the traveling wheel accumulator being attached thereto, institute
It states there are two traveling wheel oil cylinders, is all provided on each traveling wheel oil cylinder there are one traveling wheel overflow valve.
4. a kind of hydraulic system of combined tractor as claimed in claim 2, it is characterised in that：The left directive wheel electricity
Oil circuit between magnetic reversal valve and left directive wheel oil cylinder is equipped with the second hydraulic lock, the second hydraulic lock and left directive wheel electromagnetic switch
It is all provided on each oil circuit between valve row there are one left directive wheel lifting superposing type throttle valve, the left directive wheel lifts superposing type
Throttle valve is composed in parallel by throttle valve and throttle system check valve, and the oil circuit of left directive wheel oil cylinder is equipped with the left side being attached thereto and leads
To wheel accumulator, there are two the left directive wheel oil cylinders, is all provided with that there are one left directive wheel overflow valves on each left directive wheel oil cylinder.
5. a kind of hydraulic system of combined tractor as claimed in claim 2, it is characterised in that：The right directive wheel electricity
Oil circuit between magnetic reversal valve and right directive wheel oil cylinder is equipped with third hydraulic lock, third hydraulic lock and right directive wheel electromagnetic switch
It is all provided on each oil circuit between valve row there are one right directive wheel lifting superposing type throttle valve, the right directive wheel lifts superposing type
Throttle valve is composed in parallel by throttle valve and throttle system check valve, and the oil circuit of right directive wheel oil cylinder is equipped with the right side being attached thereto and leads
To wheel accumulator, there are two the right directive wheel oil cylinders, is all provided with that there are one right directive wheel overflow valves on each right directive wheel oil cylinder.
6. a kind of hydraulic system of combined tractor as claimed in claim 2, it is characterised in that：The overturning oil cylinder electricity
Oil circuit between magnetic reversal valve and overturning oil cylinder is equipped with overturning throttle valve.
7. a kind of hydraulic system of combined tractor as described in claim 2-6 any one, it is characterised in that：It is described
Oil pump inlet pipeline is equipped with oil filter, and outlet conduit is equipped with supply relief valve and oil feed non-return valve, and the oil pump is gear
Oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721673527.6U CN207526788U (en) | 2017-12-05 | 2017-12-05 | A kind of hydraulic system of combined tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721673527.6U CN207526788U (en) | 2017-12-05 | 2017-12-05 | A kind of hydraulic system of combined tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207526788U true CN207526788U (en) | 2018-06-22 |
Family
ID=62577539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721673527.6U Expired - Fee Related CN207526788U (en) | 2017-12-05 | 2017-12-05 | A kind of hydraulic system of combined tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207526788U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681483A (en) * | 2019-02-19 | 2019-04-26 | 中国铁建重工集团有限公司 | Hydraulic system and vehicle |
| CN113335002A (en) * | 2021-08-05 | 2021-09-03 | 山东威猛工程机械有限公司 | Steering hydraulic system of highway and railway dual-purpose engineering machinery |
| CN114001061A (en) * | 2021-10-19 | 2022-02-01 | 中国重型机械研究院股份公司 | Hydraulic control method for lifting of tundish of adjustable slag line |
-
2017
- 2017-12-05 CN CN201721673527.6U patent/CN207526788U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681483A (en) * | 2019-02-19 | 2019-04-26 | 中国铁建重工集团有限公司 | Hydraulic system and vehicle |
| CN113335002A (en) * | 2021-08-05 | 2021-09-03 | 山东威猛工程机械有限公司 | Steering hydraulic system of highway and railway dual-purpose engineering machinery |
| CN114001061A (en) * | 2021-10-19 | 2022-02-01 | 中国重型机械研究院股份公司 | Hydraulic control method for lifting of tundish of adjustable slag line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180622 Termination date: 20191205 |